Machine for trimming parallel surfaces.



N.0.786,759. 1 PATLNTLD APRA, 1905.

' H. C. HANSEN. L 1 'l MACHINE POR TRIMMING PARALLEL SURPAGLS.

APliLIoATIoN lLILND 1120.151903 2 sHBL.T s-SHLLT 1.

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i NITED STATES Patented April 4, 1905.'

PATENT OFFICE..

HANS C. HANSEN, OF NEW-TON,MASSACHUSETTS MACHINE Fon TR'IMMING PARALLEL suRFAoEs.

SPECIFICATION forming part of Letters Patent No. 786,759, dated April 4, 1905. j Application filed December 18, 1903. Serial No. 185.620.

To alwwm t may concern: f I

Be it known that I, HANS C'. HANSEN, a citizen of the United States, residing at Newton, in the county of Middlesex and State of Massachusetts, have invented an Improvement in Machines for Trimming Parallel Surfaces, of which the following description, in connection with the accompanying drawings, is a'specilication, like characters on the drawings repre- -metal or wood be trimmed exactly parallel.

Figure l, in side elevation, representsI one of my improved trimming-machines; Fig. 2, a plan view thereof; Fig. 3, a section in' the line m, Fig. 2. Fig. 4 is adetail showing the 'holder with material to be trimmed; and Fig.

5, a section in the line w", Fig. 1t.

Referring to the drawings, A represents a bed, shown as having parallel guideways A and sustained by a suitable stand A2, the stand having suitable bearings for a shaft having a pulley A3, that may be driven by a belt or in This shaft is shown as having a drum A'L to receive a plurality of belts A5, said drum and belts being represented as the driving means for a pluralityof spindles B B' to be described. Instead, however, of driving these spindles by belts from a drum the spindles may be drivenby any other usual or suitable means for imparting a rotary motion from one to another shaft, as by gearing. The spindles shown are mounted, respectively, in suitable bearings a a', rising from carriages 1)', each having its under side grooved to slide on the longitudinal parallel ways A. Said spindles have suitable pulleys c c, over which, as herein' shown, are extended the driving-belts A5, and said spindles are driven in the same direction at any desired speed, that depending upon the size of the drum A4 with relation to the size of the pulleys @and c. Each spindle has a cutter-head vZ CZ', and the contiguous faces of said head one or more like cutters e or c', each tool being clamped to said head in its working adjustment by a clamp-screw 2, (shown by dotted lines in Fig. 3,) said clamp-screw entering 'a threaded hole in the head, thev end o f the clamp-screw contacting with the shank ofthe cutter.

Each carriage 'b and b has a clamping device, shown as a hooked rod 3, screw-threaded at its upper` end to receive a handled nut 4, and by turning this nut either of the carriages may be clamped on the bed, thus locating the path of movement of the cutters at any desired distance apart. carriage as having depending from its bottorn a nut 5, that engages the threads of a screw-threaded rod, havinga handle 7X, and when the handled nut holding that carriage in place is loosened I may adjust that carriage toward and from the carriage then station-v ary, for any desired extent, or, if I prefer, I `may release the handled nut of the carriage b and slide the latter on its ways on the bed and then lock it again in its adjusted position. Each carriage ZJ b' has a track ff,l (see Fig.

above the same. The tracks fand f receive, respectively, transverse slides g g', the slide g at one side of the bed having fixed to it a rod 7, (see Fig. 2,) that enters a hole in the contiguous end of the other slide, g', andthe slide r/ at the front of the bed, as shown in Fig. 1, has a connected rod 8, that is extended through a h'ole in the contiguous end of the other slide, g. These rods, one carried by each slideand entering a hole in the other slide, act to permit the spreading apart of these slides and yet insure the exact parallelism of movement of one slide with relation to another and practically making the two slides into one, capable, however, of adjustment one slide toward the other. It will be understood /that each slide occupies always exactly the same relation to its carriage under all adjustments of the carriages and slides, and the slides are moved one away from or toward the lhave suitable openings for the reception ofA 1,) that crosses the guideways A at a distance I have also shown the `in represented, by screws 14 with a gib 15 (see Fig. 5) o' irregular cross-section, fitted to be moved longitudinally in agroove of the -slide g. One end of the gib, as shown in Figs.

3 and 4, has a screw 16, that enters a threaded hole in the boss of a ring 17, that is free to slide in a round hole 18 made in the slide g or g. The round hole through the slide from one to its opposite end also receives a screw 20, that receives on its threaded part a nut 21,

to which is joined one end of a spiral spring 22, the opposite end of said spring being connected with the ring 17 referred to. The screw 2O is extendedthrough a bearing 80, (see Fig. 4,) and when the screw is rotated the nut 21 is moved longitudinally in the hole 18, and therefore by rotating the screw in one or the other direction the stress of the spring 22 and the force with which it pulls on the ring 17, connected with the gib of the member m or m of the work-holder, may be varied. This screw enables the material to be acted upon to be properly and securely clamped, whatever its thickness and whether one or a plurality of pieces of stock are held together in a bunch, that the opposite ends of one or a plurality of pieces of metal or wood may be trimmed parallel, thus making all of them of exactly the same length. To load up the rest with one or a plurality of pieces of metal or wood, the opposite ends of which are to be trimmed parallel,

l engage one or the other of the slides g or g and move the same laterally together on the bed A, pulling the same, let it be supposed, to

ward the left from the position Fig. 3. In this movement the lower end of the movable members m will meet a stop a, there being a like stop for. each member that will arrest the movement of said member with its vertical face adjusted outside the path of movement of the trimming-tools, and by continuing the outward movement of the slide while the members m m/ are stopped the members 12 may be moved away from the members m m until ample space isafforded betweenthe clamping mem bers or jaws of the work-holder in which to insert the material to -be trimmed, one or more pieces, according to the work to be done. Immediately the work to be trimmed has b een laid upon the rests thc user of the machine will release his hold upon the slides and will let the springs 22 assume control of the work-holding means, and said springs will thoroughly clamp and hold lixedly the material the opposite ends of which is to be. trimmed while the trin'nning takes place.

1t will be understood that the bearings /i and will be adjusted one with relation to the other at the proper distance apart to provide for trimming parallel the opposite portions of any material to be trimmed and of any length, the length being limited only by the length of the bed A.

In practice it will be understood that the path of movement of the tools will bea little closer together than required for the length of the articles the ends of which are to be trimmed parallel, and consequently said material when forced by the user of the machine pressing upon the slides g g will be brought into the path of movement of the cutters, and the cutters acting simultaneously on opposite ends of the material being trimmed will trim both ends parallel.

To aid in alining the ends of a number of pieces the ends of which are to be trimmed simultaneously parallel, l have provided one oi the carriages, as b, with agage o, (see Fig. 2,) having a shank o', that may be locked in any position of adjustment of the gage by a setscrew 02.

Sometimes it is desirable to lock the slides in their outward position in opposition to the stress of the spring 22, while the work to be acted upon is put in position in the workholder, and to provide for so locking the slides l employ a shaft p, having an eccentric y1. (Shown by dotted lines, Fig, 3.) The eccentric enters a hole in a clamp p, that is carried by but vertically movable with relation to one of the carriages, as The upper end of this clamp has an inturncd end that engages a shoulder of one of the slides, as y. When the shaft 7J is turned partially, as it may be by pulling outwardly a headed stud p, slotted at its inner end to engage a projection extended from said shaft, the eccentric will be turned downwardly from the position Fig. 3, causing the clamp to descend and by its project-ing upper end engage the shoulder of the slide and lock it in open position until such time as it may be desired that the spring 22 assume control of the work-holder to properly hold the work to be trimmed.

lt will be understood that the slides and carriages will be adjusted longitudinally of the bed A at the proper distances apart to insure trimming parallel the ends of stock and yet leave the stock of exactly the desired length. As a means for readily determining the length of the article whose .ends are to be trimmed parallel l have provided the carriages with length-determining means, said means eemprising two gages r1", one of which, as l", is controlled as to its position on the slide f/ by r screw s. Whenever, therefore, it is desired io trim stock and leave the same of a prede- ;ermined length, It have only to select a piece of naterial for a pattern ofj ust the desired length )r standard and place it between the gages, iu'rning the screw 6 until said gages contact with the ends of the pattern, and then the carriage which was moved will be locked in workllng position. This done, the machine may be started, and the tools will cut a series of pieces of stock of exactly the same length as the piece used for the pattern.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a machine of the class described, two carriages each containing a shaft having a cutter-head provided with a cutter, means to adjust said carriages t'o place the cutter-heads at desired distances apart, and adjustable rests for the stock the opposite ends of which are to be trimmed parallel by said cutters, and work-holding means connected with said rests including fixed and movable members having parallel faces, and means to adjust said members to adapt them to receive and clamp the stock to be trimmed.

2. In a machine of the class described, carriages movable longitudinally with relation to each other, a shaft mounted in each carriage, each shaft having a cutter-head to carry atrimming-cutter, rests mounted on said carriages, and sustaining work-holding means, said rests and work-holding means being mounted on and movable 4with said carriages when the latter are being adjusted to act on work of different lengths, and means to adjust the work-holding means transversely of the carriages to clamp and vhold the work to be acted upon.

3. In a machine of the class described, abed, carriages sustained on said bed, shafts in said carriages, each shafty having a cutter-head to carry a trimming-cutter, a slide mounted on each of said carriages and sustaining workrests and work-holders, said slides being movable with the carriage when adjusting the latter to the length of the stock to be acted upon, and means to adjust said slides transversely with relation to said carriages, substantially as described. j

4. In a machine of the class described, a bed, carriages sustained on said bed, shafts in said carriages, each shaft having a cutter-head to carry a trimming-cutter, slides sustaining work-holders, said 'slides being mounted on said carriages and movable longitudinally therewith, and guide-rods extended respectively from one of said slides and passing through the other of said slides.

5. In a machine of the class described, two carriages each having a transverse track, a rotary shaft mounted in'bearings in each of said carriages, a cutter-head carried by each shaft and provided with a cutter,'a slide mounted' on each transverse track of said carriages,

work-holders sustained thereon, and means to I adjust said carriages and their work-holders transversely to the longitudinal axes of said shafts.

carriage, gages tolcoact with a pattern or standard of the desiredlength that the cutter-heads may be located exactly at the proper distance apart to trim parallel the ends of and leave stock exactly of the length of the pattern,and stock-holding means movable on said transverse tracks at right angles to the axis of rotation of the shafts carrying said cutters that the tools acting simultaneously upon oppositeends of the stock may trim the same parallel.

7. In a machine of the class described, cutter-heads each having a trimming-cutter, slides having work holding means and movable transversely of the axis of rotation of said cutter-heads, springs acting normally to close the work-holder onto the stock, and means to lock the slides in their outward position.

8. In a machine of the class described, rotatable cutter-heads having each a trimming-cutter, clamps having work-holders, each workholder comprising a jaw movable longitudil 7o 6. In a machineof the class described, rotatable cutter-heads each having a trimming-cut-- ter, movable carriages sustaining the shafts of 1 said cutter-heads, transverse tracks one on each f nally of said clamp, and stops to arrest one of f said jaws just outside the path of movement of the trimming-cutters when said slides are moved transversely of the longitudinal axis of the cutter-head into position to receive the stock to be acted upon, the remaining member of the clamp being capable of being moved farther to separate the members of the clamp for the proper distance to receive the work,

`and a spring to cause the members of the clamp to embrace and hold the work.

9; In a machine of the class described, two carriages, tracks to sustain the same, each carriage having a transverse track, ashaft mounted in each carriage and having a cutting-tool, slides mounted on said transverse tracks, means for slidably connectingsaid slides, one with the other, and work-rests sustained by and movable with said slides transversely of the `cutter-carrying shafts.

10. In a machine of the class described, two

carriages, tracks to sustain the same, each carriage having a transverse track, a shaft mounted in each carriage and having a cutting-tool, slides mounted on said transverse tracks, means for slidably connecting said slides one with the other, and work-rests sustained by and movable with said slides transversely of the cutter-carrying shafts, and means .to lclamp the work sustained on said work-rests.

11. ln a machine of they class described, a plurality of cutter-heads each having acutter, and

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two slides, parallel tracks sustaining said slides, each slide having a connected rod extended through the other slide.

1Q. In a machine ofthe class described,a plurality of cutter-heads each havinga cutter, and two slides, parallel tracks sustaining said slides, each slide having a connected rod eX- tended through the other slide, a work-rest and jaw fixed to each slide, and a movable spring-held jaw also sustained by each slide.

13. In amachine ofthe class described,a plurality of cutter-heads each having a cutter, and two slides, parallel tracks sustaining said slides, each slide having a connected rod eX- tended through the other slide, a work-rest and jaw iXed to each slide, and a movable spring-held jaw also sustained by each slide, and stops to arrest the outward movement of the spring-held jaws before the completion o1 the outward movement of said slides and their fixed jaws.

14. In a machine of the class desc1'il)ed,aplu rality ofcutter-heads each having a cutter, and two slides, parallel tracks sustaining said slides, each slide having a connected rod extended through the other slide, and means to clamp said slides in position to receive the work to he trimmed. l

In testimony whereof I have signed my name to this speciiication in the lnesence ol two subscribing witnesses.

HANS C. HANSEN.

Witnesses:

Guo. lV. GREGORY, EDITH M. S'roDDAuD. 

